glib-arrays.html

最新gtk中文资料集

<a name="id3316715"></a><h3>
<a name="g-array-remove-index-fast"></a>g_array_remove_index_fast ()</h3>
<a class="indexterm" name="id3316729"></a><pre class="programlisting"><a class="link" href="glib-Arrays.html#GArray">GArray</a>*             g_array_remove_index_fast           (<a class="link" href="glib-Arrays.html#GArray">GArray</a> *array,
                                                         <a class="link" href="glib-Basic-Types.html#guint">guint</a> index_);</pre>
<p>
Removes the element at the given index from a <a class="link" href="glib-Arrays.html#GArray"><span class="type">GArray</span></a>.
The last element in the array is used to fill in the space, so this function
does not preserve the order of the <a class="link" href="glib-Arrays.html#GArray"><span class="type">GArray</span></a>. But it is faster than
<a class="link" href="glib-Arrays.html#g-array-remove-index"><code class="function">g_array_remove_index()</code></a>.
</p>
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<td><p><span class="term"><em class="parameter"><code>array</code></em>&#160;:</span></p></td>
<td>a <em class="parameter"><code>GArray</code></em>.
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<td><p><span class="term"><em class="parameter"><code>index_</code></em>&#160;:</span></p></td>
<td>the index of the element to remove.
</td>
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<td><p><span class="term"><span class="emphasis"><em>Returns</em></span>&#160;:</span></p></td>
<td>the <a class="link" href="glib-Arrays.html#GArray"><span class="type">GArray</span></a>.


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<div class="refsect2" lang="en">
<a name="id3316850"></a><h3>
<a name="g-array-remove-range"></a>g_array_remove_range ()</h3>
<a class="indexterm" name="id3316866"></a><pre class="programlisting"><a class="link" href="glib-Arrays.html#GArray">GArray</a>*             g_array_remove_range                (<a class="link" href="glib-Arrays.html#GArray">GArray</a> *array,
                                                         <a class="link" href="glib-Basic-Types.html#guint">guint</a> index_,
                                                         <a class="link" href="glib-Basic-Types.html#guint">guint</a> length);</pre>
<p>
Removes the given number of elements starting at the given index from a
<a class="link" href="glib-Arrays.html#GArray"><span class="type">GArray</span></a>.  The following elements are moved to close the gap.
</p>
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<td><p><span class="term"><em class="parameter"><code>array</code></em>&#160;:</span></p></td>
<td>a <em class="parameter"><code>GArray</code></em>.
</td>
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<td><p><span class="term"><em class="parameter"><code>index_</code></em>&#160;:</span></p></td>
<td>the index of the first element to remove.
</td>
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<td><p><span class="term"><em class="parameter"><code>length</code></em>&#160;:</span></p></td>
<td>the number of elements to remove.
</td>
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<td><p><span class="term"><span class="emphasis"><em>Returns</em></span>&#160;:</span></p></td>
<td>the <a class="link" href="glib-Arrays.html#GArray"><span class="type">GArray</span></a>.
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<p class="since">Since 2.4


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<div class="refsect2" lang="en">
<a name="id3316997"></a><h3>
<a name="g-array-sort"></a>g_array_sort ()</h3>
<a class="indexterm" name="id3317010"></a><pre class="programlisting">void                g_array_sort                        (<a class="link" href="glib-Arrays.html#GArray">GArray</a> *array,
                                                         <a class="link" href="glib-Doubly-Linked-Lists.html#GCompareFunc">GCompareFunc</a> compare_func);</pre>
<p>
Sorts a <a class="link" href="glib-Arrays.html#GArray"><span class="type">GArray</span></a> using <em class="parameter"><code>compare_func</code></em> which should be a <code class="function">qsort()</code>-style comparison
function (returns less than zero for first arg is less than second arg, 
zero for equal, greater zero if first arg is greater than second arg).
</p>
<p>
If two array elements compare equal, their order in the sorted array is
undefined.
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<td><p><span class="term"><em class="parameter"><code>array</code></em>&#160;:</span></p></td>
<td>a <a class="link" href="glib-Arrays.html#GArray"><span class="type">GArray</span></a>.
</td>
</tr>
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<td><p><span class="term"><em class="parameter"><code>compare_func</code></em>&#160;:</span></p></td>
<td>comparison function.


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<div class="refsect2" lang="en">
<a name="id3317118"></a><h3>
<a name="g-array-sort-with-data"></a>g_array_sort_with_data ()</h3>
<a class="indexterm" name="id3317131"></a><pre class="programlisting">void                g_array_sort_with_data              (<a class="link" href="glib-Arrays.html#GArray">GArray</a> *array,
                                                         <a class="link" href="glib-Doubly-Linked-Lists.html#GCompareDataFunc">GCompareDataFunc</a> compare_func,
                                                         <a class="link" href="glib-Basic-Types.html#gpointer">gpointer</a> user_data);</pre>
<p>
Like <a class="link" href="glib-Arrays.html#g-array-sort"><code class="function">g_array_sort()</code></a>, but the comparison function receives an extra user data
argument.
</p>
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<td><p><span class="term"><em class="parameter"><code>array</code></em>&#160;:</span></p></td>
<td>a <a class="link" href="glib-Arrays.html#GArray"><span class="type">GArray</span></a>.
</td>
</tr>
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<td><p><span class="term"><em class="parameter"><code>compare_func</code></em>&#160;:</span></p></td>
<td>comparison function.
</td>
</tr>
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<td><p><span class="term"><em class="parameter"><code>user_data</code></em>&#160;:</span></p></td>
<td>data to pass to <em class="parameter"><code>compare_func</code></em>.


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<div class="refsect2" lang="en">
<a name="id3317248"></a><h3>
<a name="g-array-index"></a>g_array_index()</h3>
<a class="indexterm" name="id3317261"></a><pre class="programlisting">#define             g_array_index(a,t,i)</pre>
<p>
Returns the element of a <a class="link" href="glib-Arrays.html#GArray"><span class="type">GArray</span></a> at the given index.
The return value is cast to the given type.

</p>
<div class="example">
<a name="id3317285"></a><p class="title"><b>Example&#160;20.&#160;Getting a pointer to an element in a <span class="structname">GArray</span></b></p>
<div class="example-contents"><pre class="programlisting">
  EDayViewEvent *event;

  /* This gets a pointer to the 3rd element in the array of EDayViewEvent
     structs. */
  event = &amp;g_array_index (events, EDayViewEvent, 3);
</pre></div>
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<p><br class="example-break">
</p>
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<td><p><span class="term"><em class="parameter"><code>a</code></em>&#160;:</span></p></td>
<td>a <a class="link" href="glib-Arrays.html#GArray"><span class="type">GArray</span></a>.
</td>
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<td><p><span class="term"><em class="parameter"><code>t</code></em>&#160;:</span></p></td>
<td>the type of the elements.
</td>
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<td><p><span class="term"><em class="parameter"><code>i</code></em>&#160;:</span></p></td>
<td>the index of the element to return.
</td>
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<td><p><span class="term"><span class="emphasis"><em>Returns</em></span>&#160;:</span></p></td>
<td>the element of the <a class="link" href="glib-Arrays.html#GArray"><span class="type">GArray</span></a> at the index given by <em class="parameter"><code>i</code></em>.


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<div class="refsect2" lang="en">
<a name="id3317383"></a><h3>
<a name="g-array-set-size"></a>g_array_set_size ()</h3>
<a class="indexterm" name="id3317396"></a><pre class="programlisting"><a class="link" href="glib-Arrays.html#GArray">GArray</a>*             g_array_set_size                    (<a class="link" href="glib-Arrays.html#GArray">GArray</a> *array,
                                                         <a class="link" href="glib-Basic-Types.html#guint">guint</a> length);</pre>
<p>
Sets the size of the array, expanding it if necessary.
If the array was created with <em class="parameter"><code>clear_</code></em> set to <a class="link" href="glib-Standard-Macros.html#TRUE:CAPS"><code class="literal">TRUE</code></a>, the new elements are set to 0.
</p>
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<td><p><span class="term"><em class="parameter"><code>array</code></em>&#160;:</span></p></td>
<td>a <a class="link" href="glib-Arrays.html#GArray"><span class="type">GArray</span></a>.
</td>
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<td><p><span class="term"><em class="parameter"><code>length</code></em>&#160;:</span></p></td>
<td>the new size of the <a class="link" href="glib-Arrays.html#GArray"><span class="type">GArray</span></a>.
</td>
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<td><p><span class="term"><span class="emphasis"><em>Returns</em></span>&#160;:</span></p></td>
<td>the <a class="link" href="glib-Arrays.html#GArray"><span class="type">GArray</span></a>.


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<div class="refsect2" lang="en">
<a name="id3317516"></a><h3>
<a name="g-array-free"></a>g_array_free ()</h3>
<a class="indexterm" name="id3317529"></a><pre class="programlisting"><a class="link" href="glib-Basic-Types.html#gchar">gchar</a>*              g_array_free                        (<a class="link" href="glib-Arrays.html#GArray">GArray</a> *array,
                                                         <a class="link" href="glib-Basic-Types.html#gboolean">gboolean</a> free_segment);</pre>
<p>
Frees the memory allocated for the <a class="link" href="glib-Arrays.html#GArray"><span class="type">GArray</span></a>.
If <em class="parameter"><code>free_segment</code></em> is <a class="link" href="glib-Standard-Macros.html#TRUE:CAPS"><code class="literal">TRUE</code></a> it frees the memory block holding the elements
as well. Pass <a class="link" href="glib-Standard-Macros.html#FALSE:CAPS"><code class="literal">FALSE</code></a> if you want to free the <a class="link" href="glib-Arrays.html#GArray"><span class="type">GArray</span></a> wrapper but preserve
the underlying array for use elsewhere.
</p>
<div class="note" style="margin-left: 0.5in; margin-right: 0.5in;">
<h3 class="title">Note</h3>
<p>
If array elements contain dynamically-allocated memory, they should be freed
separately.
</p>
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<td><p><span class="term"><em class="parameter"><code>array</code></em>&#160;:</span></p></td>
<td>a <a class="link" href="glib-Arrays.html#GArray"><span class="type">GArray</span></a>.
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>free_segment</code></em>&#160;:</span></p></td>
<td>if <a class="link" href="glib-Standard-Macros.html#TRUE:CAPS"><code class="literal">TRUE</code></a> the actual element data is freed as well.
</td>
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<td><p><span class="term"><span class="emphasis"><em>Returns</em></span>&#160;:</span></p></td>
<td>the element data if <em class="parameter"><code>free_segment</code></em> is <a class="link" href="glib-Standard-Macros.html#FALSE:CAPS"><code class="literal">FALSE</code></a>, otherwise <a class="link" href="glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a>.
	The element data should be freed using <a class="link" href="glib-Memory-Allocation.html#g-free"><code class="function">g_free()</code></a>.


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<div class="refsect1" lang="en">
<a name="id3317718"></a><div class="refsect2" lang="en"><a name="id3317720"></a></div>
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<div class="refsect2" lang="en"><a name="id3317721"></a></div>
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